3

System V (by AT&T) is the ancestral Unix, and I have used it. But I have never read or heard anything about systems I-IV, other than they existed once upon a time in the dim past. How effective were they, and were they widespread? Is it possible to get one's hand on the code and/or install it? Does anyone here have any experience with these earlier systems?

1
3

According to wikipedia System V was preceded by System III, a release of UNIX/TS 3. Since there were no official release of UNIX/TS 4, System III was superseded directly by System V.

1

Earlier versions of Unix were either AT&T internal versions or saw very limited outside use (other than e.g. base for BSD versions, used and mangled under academic licenses; or bases for commercial systems distributed under other names like Microsoft's Xenix).

1
  • In the context of this question, “earlier versions” would be System III, and that did see quite a lot of use outside of AT&T. Mar 2 '20 at 10:21

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.